source:other news release time:2023-08-12 Hits: Popular:led screen wholesaler
(1) Colors: Mainly red, green, blue, cyan, yellow, white, and amber.
(2) Current: According to different power levels, commonly used LED currents range from 20mA-2A.
(3) Voltage: There is a relationship between voltage and color, and the VF of red, green, and blue is generally between 1.8 and 2.4V; The voltage of white, blue, and green ranges from 3.0 to 3.6
(4) Reverse voltage Vrm: The maximum reverse voltage allowed by the LED. Exceeding this value may cause LED breakdown and damage. It should be noted that some LEDs are not allowed to reverse (such as OSRAM), and Vrm is generally between 3-5 V.
(5) Color temperature: expressed in absolute temperature K. In summer, the sunlight is 5500K at noon and 4000 in the afternoon.
(6) Luminous intensity: calculated in Candela cd. This quantity indicates the convergence ability of the emitting body in space, which is a common description of light power and convergence ability. Eg Ф The I of LED 5 is approximately 5mcd.
(7) Luminous flux: measured in lumens lm. This quantity describes the total amount of light emitted by a light source, which is equivalent to light power. The existing 1W LED luminous flux can reach 80-130lm.
(8) Illumination: calculated by Lux lux. The luminous flux evenly distributed on a surface of 1 square meter.
(9) Color rendering: represented by CRI. EG. Luxeon has a cold white color of 70, neutral white color of 75, and warm white color of 85.
(10) Half value angle: twice the angle from the centerline when the luminous intensity is half of the peak. According to different applications, it can be divided into high
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